CPV OX-1 REV. 6
Prepared by: R.L. Wigginton Effective
1.1 - The
purpose of this specification is to define the parameters of
inspection, testing, acceptance and rejection criteria of components
and assemblies for oxygen system service.
2. Preliminary Inspection:
2.1 - Components shall be visually inspected
under normal white light illumination to ensure freedom from chips,
burrs, nicks, surface discontinuities and irregularities considered
detrimental to form, fit,
function and intended service. Components exhibiting detrimental
characteristics shall be rejected and processed as defined by CPV Q.C.-4. Conforming
components shall be accepted and processed for oxygen service cleaning.
3.1 - Components shall be ultrasonically cleaned by suspended basket
immersion in a ten (10) gallon sonic tank powered by a 900 watt source
at a cavitation frequency of 40 kHz; employing an aqueous solution;
tap water/surfactant-detergent at a bath temperature of 120-140 degrees
3.2 - Metallic immersion time shall not exceed ten (10) minutes.
3.3 - Non-metallic immersion time shall not exceed five (5) minutes.
3.4 - Components are removed from the sonic tank, rinsed under hot
tap water followed by blow drying with oil free high purity dry
4. Post Cleaning Inspection:
4.1 - Components shall be inspected under black
light illumination to ensure freedom from lint and hydrocarbon
exhibiting fluorescence in the forms of blots, blotches, smears,
smudges or films shall be recleaned as defined in Section 3. Components
incapable of passing the black light inspection shall be rejected
and processed as defined in CPV Q.C.-4. Components passing
black light inspection shall be processed for assembly and testing.
5.1 - Unless otherwise specified by procurement
request, lubrication for O-seal type valves/cartridges shall be
halocarbon grease series 25-1 OM; a blend of completely halogenated
chlorofluorocarbons, completely inert to all acids, alkalis and
5.2 - Unless otherwise specified by procurement request, sealant
used for threads of threaded seat check valves shall be Oxylube,
manufactured by Drilube Co.
6. Valve/Cartridges Assembly:
6.1 - Valves/cartridges are assembled in a segregated
area with the work surface covered by clean Kraft paper. Tools used in
assembly shall be kept separate from other tools or thoroughly cleaned
prior to use. Assembly personnel shall have clean hands or
7. Pressure Testing:
7.1 - Prior to testing fittings shall be thoroughly cleaned.
7.2 - Unless otherwise specified by procurement
request, valves/cartridges are pneumatically tested employing high
purity oil free dry nitrogen as the test media. An
aqueous solution of approved soaps such as Leak-Tek, Snoop, Sherlock,
Formula #16 or Formula FM-1 shall be used to check for leakage
during pressure testing.
7.3 - After testing, soap solution shall be thoroughly
rinsed off of tested units with hot tap water, followed by thoroughly
drying the tested units with high purity oil free dry nitrogen.
8.1 - Union ends of O-seal valves and bonnets
cartridges shall be Covered with clean plastic caps followed by heat
sealing in clean polyethylene bags.
9.1 - Tags shall be firmly affixed to valves/cartridges
or enclosed within the polyethylene bags with the cleaned and tested
shall reflect the
This part has been cleaned for oxygen service application
________________________Do not open until ready for
Cleaned for Oxygen Service by: _________________________ Date: ______________
Contract/P.O. No. ________________________________CPV
S.O. No. ____________